Gun-sight mechanism



April 16, 1957 J. POKORNY 'GUN-SIGHT MECHANISM 2 Sheets-Sheet i FiledMay 27, 1955 INVENI' OR Janzes PCKorrcq.

ATTORNEY United States PatentO GUN SIGHT' James Pokorny, Grants Pass,Oreg.

Application May 27; 1955;.SeriaYNb. 511,668

9: Claims. (Cl. 42-'-1) This'invention" relates-to gun sights, anditparticularly relates" to gun sights having adjustable" means forpreventing entanglingor snagging ofthe-si'ght when the gun islieht' in'aholster or pocket;

True-target sightsonpistols, rifles orthe like; aregenerally undercut;that is; they-are formed convex" on the outer side and concaveorr theinner side with the two sides-converging'in'a rathersharppoint; Thesights are undercut or'con'caved in orderto minimize reflectionof lightinto the eyes of'theshooter; they are also'provided with sharpcorners'and" edges-in order-to-present a clear and sharp picture to theshooter. However,.this undercutting and sharp edging tends to snag'tliebarrel of the gun when it :is inserted into-a holding means such as aholster'or a. pocket. As a result, either thBahOldCI is torn, the gun;sight is damaged, or-hotht occur.

It is an object ofthe present invention to provide a gun sight which isadapted toprovide all the light reflectioni prevention and. sharpness"of objectivity oh the ordinary true gun sight while, at the same time,eliminating all possibilities of snagging in a holster or the like.

Another object of the present invention is to provide a gun sight whichis easily adjusted from a shooting position to a holstered position.

Another object of the present invention is to provide a non-snagging gunsight which can easily be installed on any ordinary gun.

Other objects of the present invention are to provide an improved gunsight, of the character described, that is easily and economicallyproduced, which is sturdy in construction, and which is highly efiicientin operation.

With the above and related objects in view, this invention consists inthe details of construction and combination of parts, as will be morefully understood from the following description, when read inconjunction with the accompanying drawings in which:

Fig. 1 is a perspective view of a gun sight embodying the presentinvention, shown mounted on the end of a gun barrel. f

Fig. 2 is an exploded view, of the device shown in Fig. 1.

Fig. 2-a is a perspective view of the plunger used in the device.

Fig. 3 is an enlarged, longitudinal, cross-sectional view of the deviceof Fig. 1, showing the sight in intermediate position.

Fig. 4 is a view similar to Fig. 3, but showing the sight in readyposition for use.

Referring now in greater detail to the drawings wherein similarreference characters refer to similar parts, there is shown a gun barrelhaving an upwardly extending rib 12. The fore portion of the rib 12 isprovided with a longitudinal groove 14 which is intersected by a pair ofdrilled holes 16.

Fitting within the groove 14 is the downwardly extending flange 18 of agun sight assembly 20. The flange 18 is provided with openings 22 whichmate with openings 16 to receive appropriate locking pins 24.

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The assembly 20 comprises a sightblade 26 which consists ofamupstandingportion having aconvex front surface-28; a-coneave rearsurfaceaSfl, andasharp pointed apex 32. between the front and rear' surfaces;

Eongitudinally spaced fr'onr the sightblade 26, as by a groove 34; is aramp portion 36.- The ramp 36 is providedwith' a convexl'y Y curvedupper" surface 38 which terminatesat 40 in common plane: with the bottomedge 42 of the blades 26. A bore 44 extends through the front'.faee'ofthe ramp Miami in this here is positioned a sprii1g= 46 bearii1gagainst therear'end 47 of a plunger 48? square in eross section' and"curved forwardly and downwardly at its fi'ont face 49'; i

A pair of plates 50, each having a curved top rear portiona 51 and" anfiat bottom edge 53; are positioned or either side of the" sightassembly 20'. The bottom edges 53? of the plates Sll lie flush on therib 12' at either-*side of-the-groove14, and the plates, themselves,are' connected to the sight assembly by means of 'pins 52 fittingthrougli ali'gned openings 54 in the assembly and 56'- in=- the plates50E Notches 58- areprovided in the upper surface of 'ea'cli' plate 50:-

Positioned'within the groove34 is a blade or adaptor 6ti'having'a curvedelongated slot 62 at theend adjacent the plunger 485 end' ofthe blade oradaptor 60 isrounded" at its tip-61" to cooperate with plunger face 49and the upper-surface 63 adjacent the tip 61' is contoured' to:.complement the" curved contour of the adjaeent portion ofithe ramp. 36.One of the pins 52 ex tends' tlirough the slot 62 to pivotally connecttheblade or adaptor 60. 10 the remainder of theassembly; The elongated;curved configuration of the slot 62 provides a lost motion= connectionat' this point. The blade 6%) tapers outwardly-from the-rear=end 61 andthe' front end 65 is, therefore, somewhat Wider than the rear end. Thiswider front end 65 is provided with an outwardly and forwardly extendingpin 64 in its front face; and this pin 64 is adapted to seat withineither of two grooves 66 and 68 in the inner, concave rear face 30 ofthe sight blade 26. A notch 70 extends downwardly from the top surfaceof blade 60, this notch 79 being adapted to be engaged by a finger nailor knife blade for moving the blade 60 against spring tension 46. Thenotches 58 in the side plates 50 permit the finger or knife blade to bereadily inserted. As will be observed, all the top surfaces of ramp 36,of plate 50 and blade 60 are serrated or otherwise treated to reducereflection of light.

In operation, the blade or adaptor 60 can be lowered on its lost motionpivot 52 and slot 62 to expose the undercut side of the fixed sightblade 26. In this lowermost position, as shown in Fig. 4, the pin 64 isinserted in slot 68 and is held there by the spring-pressed plunger 48.In this position, the sight 32 is clear and sharp to the view, and thegun is suitable for accurate shooting. When the gun is to be holstered,a knife blade or finger nail is inserted in slot 70 and the blade 60 ispushed back against the pressure of the spring 46 until the pin 64 clearthe slot 68. Thereafter, the blade or adaptor can be lifted until thepin 64 snaps into a slot 66 under pressure of the spring 46. In thisposition, as shown in Fig. 1, the blade or adaptor 60 forms acontinuation of ramp 36 and sight blade 26 so that a substantiallysmooth contour is provided which is relatively free of sharp edges whichmight tend to snag when holstered. To lower the blade or adaptor 60, theblade or adaptor is again pushed backwards against the pressure of thespring-pressed plunger and is then lowered until the pin 64 snaps intogroove 68.

Although this invention has been described in considerable details, suchdescription is intended as being illustrative rather than limiting,since the invention may be variously embodied, and the scope of theinvention is to be determined as claimed.

Having thus set forth and disclosed the invention, what is claimed is: g4

1. A gun assembly including a gun barrel having a sight devicecomprising a pointed sight blade-having a concave rear surface, avertically movable adaptor positioned on said barrel adjacent said sightblade, said adaptor having an upper surface which, when the adaptor ismoved to its uppermost position, forms a gradually inclined surfaceforming a continuation of the pointed portion of said sight blade.

2. The gun assembly of claim 1 wherein said adaptor is nature of thismounted on said gun barrel with'a lost motion pivotal connection, and aspring-pressedplunger on said gun barrel urging said adaptor toward saidsight blade.

3. The gun barrel assembly of claim v2 wherein said adaptor is providedwith a front surfacehavingia'contour complementary to the concavecontour of the rear surface of said sight blade, a pair of spaced apartgrooves in said rear surface of said sight blade, and a forwardlyextending pin on the front surface of said adaptor, said pin beingadapted to extend into each of said grooves upon a predetermined pivotalmovement of said adaptor.

4. In a gun barrel assembly including a gun-barrel, an upstanding rib onsaid barrel, a gun sight base having a downwardly extending flangeinserted in a longitudinal groove in said rib, a sight blade on one endof said base, said sight blade having a concave rear surface extendingdownwardly from a pointed apex, a ramp on the opposite end of said base,said ramp having a gradually convexly curved upper surface, a ramp bladepivotally mounted,

for resiliently locking said ramp blade in either of two predeterminedpositions against said sight blade, said ramp blade forming asubstantially continuous surface between the point of said sight bladeand said ramp when said ramp blade is in one of said predeterminedpositions, and forming a discontinuous surface between the point of saidsight blade and said ramp when in the other of said predeterminedpositions.

5. The gun barrel assembly of claim 4 wherein said base is releasablyheld on said gun barrel by releasable coupling pins.

6. The gun barrel assembly of claim 4 wherein a pair of guard plates arepositioned on said gun barrel on each side of said base and its attachedcomponents.

7. The gun barrel assembly of claim 4 wherein a pair of guard plates arepositioned on said rib on each side of said base, said plates extendingupwardly adjacent said sight blade, ramp blade and ramp, said rampblade-being pivotally connected to said guard plates, and a notch on theupper surface of each of said guard plates.

8. The gun barrel assembly of claim 4 wherein said means urging saidramp blade toward said sight blade comprises a spring-pressed plungerpositioned within a bore in the front face of said ramp.

9. The gun barrel assembly of claim 4 wherein said ramp blade isprovided with a notch in the top surface thereof for cooperation with ameans for moving said ramp blade against said urging means.

References Cited in the file of this patent UNITED STATES PATENTS875,016 Uren et al. Dec. 31, 1907 with a longitudinal lost motlonconnecton, between sald 2,610,405 Dickinson Sept. 16, 1952 sight blade and saldramp, the pivot point being ad acent said ramp, means urging said rampblade toward said 35 FOREIGN PATENTS sight blade, said ramp blade havinga front surface com- 455,050

plementary to the rear surface of said sight blade, means Canada May 16,'1950 Qa ar:

